# SDR IPXA2026012869037

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 12, 2026
- Submitted: February 2, 2026
- Operation: Air carrier
- Aircraft: [N411UP](https://openairdocs.org/aircraft/N411UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 23851
- Aircraft time: 39,473 hours, 26,446 cycles
- System (JASC): [5350 · Aerodynamic Fairings](https://openairdocs.org/jasc/5350)
- Part: Tee Fitting
- Part number: 149N763038
- Condition: Corroded
- Location: Zone 100
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2026012869037

## Discrepancy

WING TO BODY FAIRING STRUCTURE UPPER TEE FITTING EXFOLIATED AND WITH MULTIPLE SPOTS OF HEAVY CORROSION FROM BS 1180 TO BS 1240, RBL 57.50.  REMOVED AFT WTB PANEL 198LR TO FOM IAW AMM 53-66-01-004-001. INSTALLED THE TEE FITTING IAW SRM 51-40-02.

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